136 citations · 310 across the 24 of their papers we have counts for
25 papers
Polarization Architecture of Steady GRMHD Jets from the Horizon to Infinity
Zhenyu Zhang, Yehui Hou, Yu Song +2
We develop a semi-analytic framework for stationary, axisymmetric GRMHD jets that efficiently generates resolved polarized images from the near-horizon region out to $\sim 10^5\,r_…
Distinct Near-Horizon Trend of Synchrotron Polarization in Kerr Spacetime
Yehui Hou, Jiewei Huang, Bin Chen
We show that the near-horizon expansion of the linear polarization vector for synchrotron emission in a Kerr background admits a distinct analytic form. For emission from a station…
Distorting Kerr Images with Parity-Odd Scalar Hair
Qian Wan, Yehui Hou, Yang Huang +3
We investigate thin-disk imaging of Kerr black holes with synchronized scalar hair, focusing on backreacted parity-odd excited states of a complex scalar field minimally coupled to…
Black Hole Ringdown Seen in Photon Polarization Swings
Jiewei Huang, Yehui Hou, Zhen Zhong +2
Light propagating through a perturbed spacetime could imprint the underlying gravitational waveform directly onto electromagnetic observables. In this Letter, we develop a covarian…
Critical Behavior of Photon Rings in Kerr-Bertotti-Robinson Spacetime
Xi Wan, Zhenyu Zhang, Fang-Stars Wei +2
In this work, we investigate the critical behavior of photon rings in the Kerr-Bertotti-Robinson spacetime, describing a rotating black hole immersed in a background magnetic field…
Non-thermal Synchrotron Emission and Polarization Signatures during Black Hole Flux Eruptions
Fan Zhou, Jiewei Huang, Yuehang Li +4
In this work, we investigate synchrotron emission and the observational signatures of anisotropic non-thermal electrons during magnetic-flux eruptions in a magnetically arrested di…
Probing the Scalar Hair of Rotating Horndeski Black Holes through Thick Disk Images
Qian Wan, Yehui Hou, Minyong Guo
Horizon-scale images of black holes provide a potential probe of fundamental physics, including tests of gravity and black hole hair. To assess the impact of scalar hair on accreti…
Hybrid Black Hole and Disk-Driven Jets: Steady Axisymmetric Ideal MHD Modeling
Yu Song, Yehui Hou, Lei Huang +1
Improved observational precision in relativistic jets has underscored the need for tractable theoretical models. In this study, we construct a semi-analytical hybrid jet model that…
Geodesics and Shadows in the Kerr-Bertotti-Robinson Black Hole Spacetime
Xinyu Wang, Yehui Hou, Xi Wan +2
In this work, we investigate geodesics and black hole shadows in the Kerr-Bertotti-Robinson spacetime. We show that the equations of motion for null geodesics are separable and adm…
Autocorrelation signatures in time-resolved black hole flare images: secondary peaks and convergence structure
Zhenyu Zhang, Yehui Hou, Minyong Guo +2
The strong gravitational field of a black hole bends light, forming multi-level images, yet extracting precise spacetime information from them remains challenging. In this study, w…
Near-Horizon Polarization as a Diagnostic of Black Hole Spacetime
Yehui Hou, Jiewei Huang, Minyong Guo +2
A key challenge in imaging supermassive black holes is disentangling gravitational effects from plasma physics in order to accurately determine spacetime properties, particularly b…
Polarization Patterns of the Hotspots Plunging into a Kerr Black Hole
Bin Chen, Yehui Hou, Yu Song +1
The multi-wavelength polarized light signals from supermassive black holes have sparked many studies on polarized images of accretion disks and hotspots. However, the polarization…
Energy Extraction from a Kerr Black Hole via Magnetic Reconnection within the Plunging Region
Bin Chen, Yehui Hou, Junyi Li +1
Magnetic reconnection within a highly magnetized plasma has been seen as a viable mechanism to extract the energy from a rotating black hole, as it can generate negative energy pla…
Imaging thick accretion disks and jets surrounding black holes
Zhenyu Zhang, Yehui Hou, Minyong Guo +1
Based on the horizon-scale magnetofluid model developed in [arXiv:2309.13304], we investigate the millimeter-wave images of a geometrically thick accretion disk or a funnel wall, i…
Imaging a Semi-Analytical Jet model Generated by 3D GRMHD Simulation
Ye Shen, Yehui Hou, Zhong-Ying Fan +2
Employing 3D GRMHD simulation, we study the images of a geometrically thin jet, whose emissions concentrate on its surface, for accretion system surrounding a central spinning BH.…
A new analytical model of magnetofluids surrounding rotating black holes
Yehui Hou, Zhenyu Zhang, Minyong Guo +1
In this study, we develop a simplified magnetofluid model in the framework of GRMHD. We consider an ideal, adiabatic fluid composed of two components, ions and electrons, having a…
Observational signatures of rotating black holes in the semiclassical gravity with trace anomaly
Zhenyu Zhang, Yehui Hou, Minyong Guo
In a recent work by Fernandes [arXiv:2305.10382], an exact stationary and axisymmetric solution was discovered in semiclassical gravity with type-A trace anomaly, identified as a q…
Polarized images of charged particles in vortical motions around a magnetized Kerr black hole
Zhenyu Zhang, Yehui Hou, Zezhou Hu +2
In this work, we study the images of a Kerr black hole (BH) immersed in uniform magnetic fields, illuminated by the synchrotron radiation of charged particles in the jet. We partic…
Electromagnetic effects on charged particles in NHEK
Yehui Hou, Zhenyu Zhang, Minyong Guo +1
We investigate the motions of charged particles in the near horizon region of an extreme Kerr black hole with weak electromagnetic fields. There is an enhanced symmetry in the NHEK…
How different are shadows of compact objects with and without horizons?
Xiangyu Wang, Yehui Hou, Minyong Guo
In this work, we theoretically assume that a compact object (CO) can have a dark surface so that the CO is simplified to have no emissions and reflections. Considering that the rad…
On emergent conformal symmetry near the photon ring
Bin Chen, Yehui Hou, Zezhou Hu
In this note we revisit the emergent conformal symmetry in the near-ring region of warped spacetime. In particular, we propose a novel construction of the emergent near-ring $sl(2,…
Image of Kerr-Melvin black hole with thin accretion disk
Yehui Hou, Zhenyu Zhang, Haopeng Yan +2
In this present work, we study the observational appearance of Kerr-Melvin black hole (KMBH) illuminated by an accretion disk. The accretion disk is assumed to be located on the eq…
Polarized Images of Synchrotron Radiations in Curved Spacetime
Zezhou Hu, Yehui Hou, Haopeng Yan +2
In this work, we derive two formulas encoding the polarization direction and luminosity of synchrotron radiations from the moving electrons in curved spacetime under the geometric…
Multi-level images around Kerr-Newman black holes
Yehui Hou, Peng Liu, Minyong Guo +2
We study the lensing effects of Kerr-Newman (KN) black holes and the multi-level images of luminous sources around the black holes. We obtain the analytic forms of the lens equatio…